From owner-svn-src-all@freebsd.org Tue Jan 17 17:48:05 2017 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 38A57CB4ADC; Tue, 17 Jan 2017 17:48:05 +0000 (UTC) (envelope-from bjkfbsd@gmail.com) Received: from mail-ot0-x235.google.com (mail-ot0-x235.google.com [IPv6:2607:f8b0:4003:c0f::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EE82C18D3; Tue, 17 Jan 2017 17:48:04 +0000 (UTC) (envelope-from bjkfbsd@gmail.com) Received: by mail-ot0-x235.google.com with SMTP id f9so67637794otd.1; Tue, 17 Jan 2017 09:48:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=3GMi3WWM1kA5FJzq4UGkGp6R7BIf8z4u6m7pUev/h6g=; b=sPtGl2X7OWnIb2yirrpvDreNQrcP3bswxPip8VhaQsJkiFa0DEadaPO6mQAuigDofh eXmrpqONbnSvVxqmpGs5pCqMXFK5uyN13iK9fkAndzWAEXRq48Yos6UT20E1AlShOnIq 7rROhDqbvz0Rbumxot1BCJm/UkckrkHzLFjFbgERcW8AkVxdIZq1Tpu3fnmictJfAjw1 0KKeFEpMnkv93seMYkXtrVgFMBWtZAf1JW25Z1+T1tMd7JwYUsJRZ80rSi+kes0mPax2 rcJJkVUiGi7YvYxnF5cBc4jhAbFCcsD4QADuG81mtCaVFHEDT1YaNBwNmWlaJwcnJGsj QfCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=3GMi3WWM1kA5FJzq4UGkGp6R7BIf8z4u6m7pUev/h6g=; b=Ysma85BPByH9Z+kEwk1pMB5j/pVTfPUZnFRQS4hYIHXa+NwddN7HQ5kxyFFkKO4YtW S7YGVO0OdsUnwwsyq4w+kOiCrv2GTA1dHwd7+g+hsw5bfbRaz4myz7B+JjgNxn6WA1pi cmYYZ0D0nshHP2UKNG6yYkl5Khr3Q4+BbY5JjxG/WfKcYRIbTOKjlQaWYfWL2IJ3OYuD B0ELXGHgY7HHx/KkVnyOBxVLSEz38jquS8RGs3nCjEk/9Qu/Yoq+zB0HHktDkE0/hTjN cIqEAA5YKHBrPAzKJs3HzTzAKS2rL9QZqkx0pLLXGWZZ812+4eX6U7HxEUTE6HiQT5D/ Kwqw== X-Gm-Message-State: AIkVDXI+St3zlWJQ/8/Hzdb+iC+w2Mvpdeteor6EIUlJ9bz5OKmMTvSQd4S+tXqaoiqKc5xZ3I+Q5Hd8TuNVeA== X-Received: by 10.157.61.244 with SMTP id l107mr19550798otc.122.1484675284226; Tue, 17 Jan 2017 09:48:04 -0800 (PST) MIME-Version: 1.0 Received: by 10.157.52.9 with HTTP; Tue, 17 Jan 2017 09:48:03 -0800 (PST) In-Reply-To: <1484672262.86335.163.camel@freebsd.org> References: <201701161746.v0GHkcPX071529@repo.freebsd.org> <20170117065231.GW2611@FreeBSD.org> <1484672262.86335.163.camel@freebsd.org> From: Benjamin Kaduk Date: Tue, 17 Jan 2017 11:48:03 -0600 Message-ID: Subject: Re: svn commit: r312296 - in head: lib/libc/sys sys/kern sys/netinet sys/netinet6 sys/sys tools/regression/sockets/udp_pingpong tools/regression/sockets/unix_cmsg To: Ian Lepore Cc: Maxim Sobolev , Gleb Smirnoff , "svn-src-head@freebsd.org" , "svn-src-all@freebsd.org" , "src-committers@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jan 2017 17:48:05 -0000 On Tue, Jan 17, 2017 at 10:57 AM, Ian Lepore wrote: > In my experience, enums are a superior way to define integer constants > (compared to #define), but they are pure poison as variable types in > APIs and structures because their size is a compiler implementation > choice. > Well, to some extent. For example, the amd64 sysV ABI says that enum types are signed fourbyte, with a footnote that "C++ and some implementations of C permit enums larger than an int. The underlying type is bumped to an unsigned int, long int or unsigned long int, in that order." -Ben